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N. PETERS, PHOTO-LITHOGRAPHER, WASNIHGYONy D C4 iinitm "gte-tw @aientdimite.

WILLIAM E..LUDLOW, OF CINCINNATI, OHIO, ASSIGNORIO HENRY C. METCALFE, OFSAME PLACE.

Lettersv Patent No. 94,423, dated August 31, 1869.

IMPROVE!) STEP AND EXTENSIQN-LADDER The Schedule referred to in theseLetters Patent and making part of the lame.

v- P'v- Tu 'lhom it 'may concernr Be it known that I, WILLIAM E. LUDLOW,of Cincinnati, Hamiltoncounty, Ohio, have invented a new 'and usefulImprovement in Step and Extension-Ladders; and I hereby declare thefollowing to be a full,

clear, and exact description thereof, reference being4 had to theaccompanying dra-wings, making part of this speciiicatioli.

This invention relates to the class known as step, and extension-Immers,and is particularly designed as au`im1n'ovement on that patented to lCharles Croley,

of Dayton, Ohio, on 'the 13th day of August, 1867.

My improvement consists in a form of slide. or clip,

which, while of cheaper application, is free from the liability to bindand getfout of place, to which Cro-V ]eys slide is subject.

Figui-Q1 is a perspective view of myimproved slide in posit-ion on theladder.

Figure 2 is a transverse section thereof.

Figure 3 shows one of my slides detached.

A and B are portions of the two members of astep and extension-ladder.

My slide C is pivoted at c to the portion B, as in Croleys, but diii'ersfrom his in having no tongue,

nor any groove in the member A to receive the same; which tongue andgroove, beside their expense, are objectionable from their liability tobind and get out of order, especially in out-door use, owing to theexpansionand shrinkage of the wood-work. It is found that if the fitbetween the tongue aud groove is madey sufciently free to work easily inall weathers, the ends of the tongue will at times lide on and destroythe sides of the groove-a defect that rapidly increases with use.

Instead of Croleys tongue and groove, I simply prolong my slide aconsiderable distance up and down, and furnish it wit-h four claws orlips, I), which embrace the edges of the member A.

I claim herein as new, and of my invention- The parts C c D, composing aslidingjoint fora step and extension-ladder, as set forth.

In testimony of which invention, I hereunto set my hand.

WILLIAM E. LUDLOW.

Witnesses:

GEO. H. KMGHT, JAMES H. LAYMAN.

